@ -303,7 +303,7 @@ enum {
* macros look impenetrable to you, you might find it helpful to
* read
*
* http://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
* https://www.chiark.greenend.org.uk/~sgtatham/coroutines.html
* which explains the theory behind these macros.
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